Lock



A. SCHOEPE ET AL Aug. ll, 1953 LOCK 2 Sheets-Sheet l Filed March 30, 1950 #1W 4f am 37mm/EVS Aug. 11, 1953 A. SCHOEPE ET AL 2,648,559

LOCK

Filed March 30, 1950 2 Sheets-Sheet 2 l l [N V EN TORS ithe opening in the keeper.

ll'atentecl ug. l1, 1195.3

UNITED STATES PATENT oFF'Ic LOCK Adolf Schoepe, Anaheim, and John White Sinclair, Costa Mesa, Calif., assignors to Kwikset Locks, Inc., Anaheim, Calif., a corporation of California Application March 30, 1950, Serial No. 152,868

This invention relates to improvements in locks, 'such as. door locks.

A primary object of the invention is to provide an improved door lock wherein there is an adof the opening therein has the bolt tilted or shifted into a position wherein the head of the bolt occupies a position behind a narrower portion of In this manner as the head on the bolt is effectively locked in the gkeeperfagainst withdrawal therefrom as long as the'bolt is in the tilted position the improved lock may be advantageously employed between two opposed swinging doors or between slidable doors `or a rslidable door and its door jamb.

More specically, an object of the invention is to provide a lockv having the `above-mentioned characteristics wherein the bolt is projected from its housing in an axial direction and after having been projected therefrom a sui'cient distance to .enter the keeper bolt is tilted'with relation to the housing and keeper and is effectively locked in the tilted position until unlocked therefrom in a proper or authorized manner, such as by the re- .verseoperation of the plug of a key-controlled lock.

, Another object of the invention is'to provide a lock having the above-mentioned characteristics wherein a number of precautionary measures are taken to prevent unlocking of the bolt when in its locking` position either by reverse working on the 'bolt itself, jarring, vibration or the like, and Vto `provide a lock which will function properly re- Vgardless of whether the lock is installed in a right Yside up position or an upside down position.

With the foregoing Aand other objects in view y'which will be made manifest in the following detailed description and speciiically pointed out in the appended claims, reference is had to the accompanying drawings for an illustrative embodiment of the invention, wherein: Y. Figure 1 is a horizontal section through a por- Ition .of ak door and either an opposed door or a door jamb therefor, illustrating the lock and its keeper embodying theV present invention as having been installed thereon; a Fig. 2 is a vertical section through the lock housing and the keeper, the bolt of the lock being shown in its fully retracted'position;

. Fig'.c3 is a horizontal section taken substantially ',upon the'line 37.43 upon Fig. 2

Claims. (Cl. 292-66) and. through the slot I9.

Fig. 4 is a'view similar to Fig. 2, but illustrating the lock in that position wherein the bolt has been projected from the housing into'the keeper, the position of the bolt being roughly halfway between the fully retracted position and the fully projected position;

Fig. 5 is a view similar to Fig. 2, but illustrating the bolt of the lock in fully projected position;

Fig. 6 is a vertical section taken substantially upon the line 6 6 of Fig.l 5 in the direction indicated; and Y Fig. 7 is a vertical section taken substantially upon the line 1-1 ofFig. 5 in the direction indicated. f

Referring to the accompanying `drawings .wherein similar reference characters designate similar parts throughout, the improved lock consists generally of a housing In adapted to be recessed in a door D and which has preferably integral therewith a face plate II a-dapted to be recessed in the edge of the door.

The keeper for the bolt of the lock consists of a receptacle or cupY I2 adapted to be recessed either in an opposed door or in a door jamb J and this receptacle is equipped with a face plate I 3 in which an opening is formed. The opening in the face plate I3 is generally of keyholeconguration, that is the upper portion of the opening indicated at I4 is of suilicient width and size to enable the head'IS of the bolt I6 to be passed therethrough. The lower portion of the opening in the face plate I3 indicated at Il is narrower than the upper portion so that the head I5 cannot be retracted through the lower portion of the opening. The lower portion of the opening, however, is capable of receiving the shank of the bolt lI6 behind the head I5.

The shank of the bolt extends rearwardly in a cavity I8 cored or otherwise formed in the housing I0. Intermediate its ends a diametrical slot I9 is formed through the shank of the -bolt and a pin`20 extends transversely through the housing The length of theslot I9 is equal to the length of the throw of the bolt I6 andthe pin 20 extending through'the'slot while guiding to a certain extent the movement of the bolt enables the bolt not only to slide with relation to the housing' butto tilt relatively thereto.

The forward end of the housingy is relieved as indicated at 2| to accommodate a downward'tilting n Behind the bolt IISV there is a plug `22 thatis sndame 'in the cavity la.l ATwo pins nana-24' extend laterally from this plug and a similar pin 25 extends laterallyfro'm the bolt |65 A gate Vvor plate 21 lies against the sides of the bolt and plug. This plate or gate is pivotally connected to the rear end of the bolt by means of the pin 25 thereon. However, it has a three-armed slot formed therein receiving the pins 23 and 24. The arms of this slot are indicated at. 2B, 23, and 35, respectively. When the bolt and plug are in their fully retracted positions the pin 23 occupies a position near the extreme end of the arm 35 and the pin 24 occupies a position intermediate the arms 28 and 29 is viewed in Fig. 2. In the course of shifting of the bolt the pin 24 moves from the position shown in Fig. 2 to the extreme end of the arm 29 as it is shown in Fig. 5. The pin 23 is withdrawn from the arm 30 and starts to enter the arm 28. The adjacent ends of the plug 22 and the bolt I6 are bifurcated to receive a link 22d which is pivotally connected to the plug and boit respectively by the pins 24 and 25.

A link 3| lies against the outer side of the gate or plate 21, this link h-aving an elongated opening 32 at one end through which the pin 23 extends. The elongated opening provides a slight amount of lost motion between the link 3| and the pin on the plug. The link in turn is pivotally connected as at 33 to a crank arm 34 on a rotary spindle 35 that extends transversely through the housing. This spindle may be operated in any suitable manner such as :by the rotatable plug of a key-controlled cylinder lock, such locks being indicated on opposite sides of the door D at 36 and 31. Any other suitable means for controlling the rotation of the spindle 35 so that it can only be rotated in an authorized manner may be utilized.

In the housing there is a ball 38 behind which `there is a compressible material such as rubber 39 retained in position such as by a plug 45. This ball is disposed within a bore in the housing the edges of which are peened over or otherwise formed to retain the ball in a position wherein it partially projects from the body of the housing so as to be engageable with the rear face of the crank arm 34, serving to retain the crank arm in its fully thrown position shown in Fig. unless forcibly disturbed from that position. A recess is formed on the rear face of the crank arm to partially receive the ball so that it may function as a detent. As will :be noted, the crank arm carries near the spindle a small cam 4I which,

in the-course of the operation of the lock, is engageable with the curved edge portion of the gate indicated at 42 so that a-s the parts proceed from the position shown in Fig. 4 to the position shown in Fig. 5, the gate 21 will be positively tilted upwardly. Conversely, in reversely operating the lock from the position shown in Fig. 5 to the position shown in Fig. 4, the cam 4I will engage the surface 42 to start a swinging of the gate 21 relative to the bolt I6 or about the pin 25 as a center to cause the plug 22 to assume a position ahead of the bolt I6 in the course of retracting the bolt. After the cam 4I has started a reverse swinging of the gate 21 from the position shown in Fig. 5, thus causing the pin 23 to re-enter the arm 30, the force exerted by the link 3| on the pin 23 causes the plug 22 to be forced rearwardly in the cavity I8 and the pins 23 and 24 quickly resume their positions with respect to the arms in the gate, as depicted in Fig. 4.

The parts of the lock are confined within the housing by means of a cover 43, the interior of which is shaped so -as to slidably bear upon and guide the parts confined thereby. At the. top of the cavity I8 there is an inclined recess 44,

which in addition to communicating with cavity I8 is formed in a portion of housing I0, which accommodates the rear end of the bolt I6 when the bolt is tilted. This recess is provided with a shoulder 45, being a depending portion of the housing, engageable by the rear end of the bolt when the bolt is in tilted position and which will prevent reverse movement of the :bolt from its projected position unless the spindle 35 is reversely rotated. Below the recess the housing provides a shallow recess 46 which accommodates the forward end of the plug 22 when the plug is in tilted position shown in Fig. 5.

The operation of the above-described lock is substantially as follows:

If the spindle 35 is rotated in a counterclockwise direction as viewed in Fig. 2, its crank arm 34 will cause the link 3| to draw the plug 22 from right to left by reason of the engagement of the link 3| with the pin 23 on the side of the plug. During the initial forward movement of the plug the plug is confined by the cavity I8 and as the pin 23 is at the extreme rear end of the arm 3|] of the slot motion can be transmitted by the gate or plate 21 from the plug 22 to the bolt |6. During the initial forward movement of the bolt, the bolt merely slides in an axial direction .pro jecting its head I5 through the wide upper por tion of the opening in the keeper |3. Such movement continues through and beyond the po-fsition shown in Fig. 4. However, as the rotation of the spindle continues from the position shown in Fig. 4 to the position shown in Fig. 5 the edge 42 will engage the cam 4| causing the gate 21 to be tilted upwardly. This causes the rear end of the bolt I6 to move upwardly into the recess 44 and causes the bolt to tilt about the pin 20 as a center. The upward tilting of the bolt affords an opportunity for the plug 22 to slip beneath the bolt and to enter the cavity 46 and in the course of this tilting movement of the plug 22, its pins 24 and 23 assume positions at the extremities of the arms 29 and 28 of the slot in the gate. In this position the plug functions somewhat as a wedge occupying the space be'- tween the bottom of the tilted bolt I6 and the bottom of the cavity 46. When the crank arm "34 reaches its extreme position as illustrated in Fig. 5, the detent or ball 33 will be engaged which serves to retain the crank arm and its spindle in the thrown position until forcibly dislodged therefrom.

During the opening movementl of the lock, that is reverse rotation of the spindle 35 from the position shown in Fig. 5 to the position shown in Fig. 2, the initial movement of the crank I'arm causes the cam 4| to engage the edge 42 and to commence swinging the gate 21 in a counterclockwise direction about the pin 25. This causes the plug 22 to commence to move in a reverse direction in the cavity I8 in advance of the bolt I6. During such movement the 'pins 23 and 24 start returning to the positions shown in Figs. 2 :and 4 in the three-arm slot. Continued clockwise rotation of the crank arm 34 causes the link 3| to push the plug 22 to the rear end of the cavity and the gate 21 to pull the bolt I6 downwardly from the tilted position and 'to be retracted in an axial direction.

It will, of course, be appreciated that in the course of the operation of the lock that the head I5, after passing through the large portion of the opening in the keeper, then moves downwardly behind the narrow portion of such opening so that it cannot be withdrawn therefrom as long Such an arrangement makes the im- When in I6 rearwardly because of its engagement at its rear end with the shoulder 45. It is likewise limpossible to turn the bolt from its tilted posi- -tion due to the wedging effect of the plug 22 between the bottom of the bolt and the bottom of the recess 46. Jarring or vibration of t'he lock willnot result in an unauthorized retraction of the bolt due to the pins 24 Iand 23 occupying positions at the extremities of the arms 29 and 28 of the slot in the gate. Likewise the spindle 35 cannot be induced to turn by jarring or vibration because of the restraining effect of the detent ball 38. The improved construction is such that even if the lock is installed in an upside down position from the position shown that it is impossible to elect an unauthorized retraction of the bolt in either of the manners above referred to.

It will be appreciated by those skilled in the art that the improved lock is very positive in its operation and is composed of a relatively small number of parts which, because of various functions that they assume, provide adequate locks against unauthorized movements of any parts.

Various changes may be made in the details of construction without departing from the spirit and 'scope of the invention as defined by the appended claims, wherein:

We claim:

1. A lock comprising a housing, a headed latch bolt mounted for sliding and tilting movement therein, a keeper having a keyhole type opening therein through the large end of which the head of the latch bolt may be projected and then on tilting of the latch bolt the small end of the opening may serve to retain the head therein, a plug slidable in the housing behind the latch bolt, and means connecting the plug and latch bolt for causing the plug and latch bolt tomove together towards bolt-projecting position and then to tilt the latch bolt relative to` the housing and cause the plug to enter between the latch bolt and the housing to lock the latch bolt in its tilted position.

2. A lock comprising a housing, a headed latch bolt mounted for sliding and tilting movement therein, a keeper having a keyhole type opening therein through the large end of which the head I of the latch bolt may be projected and then on tilting of the latch bolt the small end of the opening may serve to retain the head therein, a plug slidable in the housing behind the latch bolt, and means connecting the plug and latch bolt for causing the plug and latch bolt to move together towards bolt-projecting position and then to tilt the latch bolt relative to the housing and cause the plug to enter between the latch bolt and the housing to lock the latch bolt in its tilted position, the housing presenting a shoulder engageable by the latch bolt when in tilted position to prevent retraction of the latch bolt while held locked by the plug in tilted position.

3. A lock comprising a housing, a latch bolt mounted for sliding movement into projected and retracted positions relative to the housing and for pivotal movement relative thereto when in projected position, a plug normally disposed behind the latch'bolt in the housing, means for moving the latch bolt and plug in unison from bolt retracted position to bolt projected position, and then causing the plug'to enter between the housing and the bolt when the bolt is in its projected land vtilted position to lock the bolt in its tilted position.

4. A lock comprising a housing, a latch bolt mounted Vfor sliding movement intoprojected and retracted positions relative to the housing Aand for pivotal movement relative thereto when Vin projected position, a plug normally disposed behind the latch bolt in the housing, means for moving the latch bolt and plug in unison from bolt retracted position to bolt projected position, and then causing the plug to enter between the housing and the bolt when the bolt is in its projected and tilted position to .lock the bolt in its tilted position, the housing presenting a shoulder engageable by the boltwhen the bolt is in its tilted position to prevent -re traction of the bolt while in its tilted position.

5. A lock comprising a housing, a Spindle therein, a crank arm swingable by the spindle, a latch bolt movable in the housing from retracted to projected position and vice versa, and tiltable relative to the housing while in projected position, a plug movable in the housing and normally disposed behind the latch bolt, a link pivotally connected to the crank arm and to the plug, and a gate pivotally connecting the plug and latch bolt.

6. A lock comprising a housing, a spindle therein, a crank arm swingable by the spindle, a latch bolt movable in the housing from retracted to projected position and vice versa, and tiltable relative to the housing while in projected position, a plug movable in the housing and normally disposed behind the latch bolt, a link pivotally connected to the crank arm and to the plug by a pivot pin, and a gate pivotally connecting the plug and latch bolt, the gate having a three-armed slot through one arm of which the pivot pin connecting the link to the plug extends, the plug also having a pin extending through the slot and shiftable into one of the other arms thereof.

7. A lock comprising a housing, a spindle l therein, a crank arm swingable by the spindle, a latch bolt movable in the housing from retracted to projected position and vice versa, and tiltable relative to the housing while in projected position, a plug movable in the housing and normally disposed behind the latch bolt, a link pivotally connected to the crank arm and to the bolt, and a gate pivotally connecting the plug and latch bolt, a cam on the crank arm engageable with an edge on the gate. said cam being arranged so as to produce swinging movement of the gate when the gate is engaged thereby.

8. A lock comprising a keeper having a keyhole opening therein, a housing, a headed latch bolt in the housing adapted to be projected therefrom into the keeper, a spindle rotatable in the housing, and means operable by the spindle for advancing the latch bolt in an axial direction and then swinging the latch bolt into a position engaging a shoulder in the housing and into a position wherein the head on the latch bolt is behind the narrow portion of the keyhole opening in the keeper, the shoulder being arranged to oppose axial retracting movement 'of the bolt.

9. A lock comprising a keeper having a key- Thole vopening therein, a housing, a headed latch -bolt in the housing adapted to be projected itherefrom into the keeper, a spindle rotatable 'inv the housing, and means operable by the -spindle for advancing therlatch bolt in an axial direction and then swinging the latch bolt-into a position engaging a shoulder in the housing and into a position wherein the head on the -latch bolt is behind the narrow portion ofV the keyhole opening in the keeper, the shoulder Lbeing arranged to oppose axial retracting move- 'ment of the bolt and wedge means operable by ther spindle for wedging the latch bolt in its :tilted position until the spindle is reversely roltated.

10. A lock comprising a keeper having a keyhole opening therein, a housing, a headed latch v-bolt in the housing adapted to be projected therefrom into the keeper, a spindle rotatable `in the housing, means operable by the spindle -for advancing the latch bolt in an axial direction and then swinging the latch bolt into a position engaging a shoulder in the housing vand 'into a position wherein the head on the latch bolt is behind the narrow portion of Vthekeyhole opening inthe keeper, the shoulder being arranged to oppose axial retracting movement of the bolt wedge means operable by theA spindle for wedging the latch bolt in its tilted position until the spindle is reverseh7 rotated, andv a detentV engageable with a part carried bythe spindle for retaining the spindle in that position assumed by the spindle when the latch bolt is fully projected.

ADOLF SOHO-EPE.

J OHN'WI-IITE .SINCLAIR References Cited inthe le of this patent UNITED STATES PATENTS Number Name DateY 281,109 Milton JulyV 10, k1558-3 1,139,870 Hundert May 18, 1915 1,175,394 Winn et al. Mar. 14, 1916 1,440,884 Moore Jan. 2, 1923 1,719,203 Taussig July 2, 1929 

